November 2023 Volume 5

MAINTENANCE

MATERIALS

And lastly, spheroidizing annealing, also referred to as spheroidization is the annealing treatment used for high carbon and alloy steels to improve their machinability prior to final hardening and tempering. This heat treatment is performed just below AC1 for long durations to convert cementite (a hard, brittle phase) into softer spheroids. Annealing is an adaptable and indispensable heat treatment process for enhancing the performance and durability of steels. By altering its microstructure and mechanical properties, annealing enables steel to meet the rigorous demands of diverse industries. Its ability to reduce brittleness, increase ductility and improve machinability makes annealing a fundamental technique in modern metallurgy. And in an era where engineering materials continue to evolve, the timeless practice of annealing remains a cornerstone in the quest for stronger, more durable, and more versatile steel products.

Ray Harkins is the Quality and Technical Manager for Ohio Star Forge in Warren, Ohio. He earned his Master of Science from Rochester Institute of Technology and his Master of Business Administration from Youngstown State University. He also teaches quality, manufacturing, and business-related skills through the online learning platform, Udemy. He can be reached via LinkedIn at linkedin.com/in/ ray-harkins or by email at rharkins@ ohiostar.com. Dr. Jay Desai is a Materials Scientist with a Ph.D. in Materials Science and Engineering from the University of Texas at El Paso. His area of research includes synthesis, characterization, and performance study of various materials including steels, Ti alloys, Ni alloys, Al alloys, and 2-D materials. He is passionate about teaching, research, and exploring different places. He can be reached via email at jaydesaimse@ gmail.com.

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